CHEMICAL REACTION ENGINEERING QUIZ

From Arhenius law, a plot of loge K versus 1/T gives a straight line with a slope of (-E/R). The unit of E/R is

K cal. °K

K cal

°K

K cal/°K

TRUE ANSWER : ?
YOUR ANSWER : ?

A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ?

Large reactor followed by smaller one

Either of the arrangement A or B will give the same yield

Data insufficient, can

Smaller reactor followed by larger one

TRUE ANSWER : ?
YOUR ANSWER : ?

In case of staged packed bed reactors carrying out exothermic reaction, use

Cold shot operations for a dilute solution requiring large preheating to bring the stream upto the reaction temperature

High recycle for pure gas

All of these

Plug flow for dilute liquid requiring no large preheating of feed

TRUE ANSWER : ?
YOUR ANSWER : ?

In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled, then the equilibrium constant will

Remain the same

Be halved

Become one fourth

Also be doubled

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following factors control the design of a fluid-solid reactor?

All of these

Size distribution of solids beingtreated

Reaction kinetics for single particle,

Flow patterns of solids and fluid in the reactor

TRUE ANSWER : ?
YOUR ANSWER : ?

An irreversible first order reaction is being carried out in a CSTR and PFR of same volume. The liquid flow rates are same. The relative conversion will

Depend on the temperature

Be same in both cases

Be more in PFR than in CSTR

Be more in CSTR than in PFR

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following will favour the reverse reaction in a chemical equilibrium reaction?

Removal of at least one of the products at regular interval

Increasing the concentration of one or more of the products

Increasing the concentration of one of the reactants

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The role of a catalyst in a chemical reaction is to change the

Activation energy

Final products

Heat of reaction

Equilibrium constant

TRUE ANSWER : ?
YOUR ANSWER : ?

What is the dispersion number for a plug flow reactor?

-1

1

?

TRUE ANSWER : ?
YOUR ANSWER : ?

Collision theory gives the rate constant for bimolecular reaction as

K α eE/RT

K α √T.e-E/RT

None of these

K α e-E/RT

TRUE ANSWER : ?
YOUR ANSWER : ?